Thanks for the quick reply! I can't seem to bring up the website for them though. Is there another website I could check for the times and cost etc.
IDPA and USPSA matches at Sanners Lake in Great Mills..
I've seen a .22 rimfire pistol used at the Black Creek Steel Match, but only once by an elderly shooter. It may well have been a special circumstance and a one-time thing. Regardless, it was a problem as there is mainly falling steel at these matches and the .22 rimfire was not able to knock most of them down. The RO had to call hits for the falling steel that did not fall.
http://blackcreeksteel.wordpress.com/